<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        a {
        color: #000;
        position: relative;
        text-decoration: none;
        }

        a::before {
        background: hsl(45 100% 70%);
        content: "";
        inset: 0;
        position: absolute;
        transform: scaleX(0);
        transform-origin: right;
        transition: transform 0.5s ease-in-out;
        z-index: -1;
        }

        a:hover::before {
        transform: scaleX(1);
        transform-origin: left;
        }

        /* Presentational styles */
        body {
        display: grid;
        font-family: system-ui, sans;
        font-size: 3.5rem;
        font-weight: 800;
        height: 100vh;
        place-items: center;
        }
    </style>
</head>
<body>
    <a href="#">Sick Hover</a>
</body>
</html>